Borrowing it
Nothing to install: this file belongs to Z-M-Huang/cc-proficiency. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Z-M-Huang/cc-proficiency/main/CLAUDE.mdgit clone --depth 1 https://github.com/Z-M-Huang/cc-proficiencyWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/z-m-huang/cc-proficiency/claude-md)<a href="https://agentmods.dev/instructions/z-m-huang/cc-proficiency/claude-md"><img src="https://agentmods.dev/badge/instructions/z-m-huang/cc-proficiency/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/z-m-huang/cc-proficiency/claude-md"><img src="https://agentmods.dev/badge/instructions/z-m-huang/cc-proficiency/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00354 | $0.00354 |
| Opus 5 | $0.00177 | $0.00177 |
| Sonnet 5 | $0.00071 | $0.00071 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
cc-proficiency CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
cc-proficiency
Claude Code proficiency badge generator. Analyzes session transcripts to produce SVG badges.
Architecture
- Hook:
hooks/session-end.ts— Stop hook writes to queue (<1s) - Queue:
src/store/queue.ts— append-only JSONL, dedupe by session_id - Parsers:
src/parsers/— streaming JSONL with per-line error handling - Scoring:
src/scoring/— 5 domains + outcome multiplier, saturating curves - Renderer:
src/renderer/svg.ts— dark theme SVG, colorblind accessible - CLI:
src/cli/— entry point + commands (init, analyze, process, badge, push, explain, config, share, leaderboard, uninstall) - Leaderboard:
src/gist/registry.ts— registry gist + GitHub Issues for registration
Key conventions
- Node.js + TypeScript, compiled to
dist/ - Zero runtime dependencies (only node built-ins)
- All file I/O uses
node:fs— no third-party filesystem libs - GitHub operations use
ghCLI viaexecFileSync(notexec) - Privacy: no file paths, transcript content, or code in
store.jsonor SVG - Tests: vitest, fixtures in
tests/fixtures/
Commands
npm run build # compile TS → dist/
npm test # run vitest
npm run typecheck # tsc --noEmit
npm run lint # eslint src/ hooks/
npm run check # typecheck + lint + test
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 33 lines · 354 tokens per session scan A 8c1dd9a579f5
cc-proficiency CLAUDE.md is an instructions file published in the GitHub repository Z-M-Huang/cc-proficiency (5 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 354 tokens to every session, about $0.0018 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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